. The Watson-Crick model contained which of the following parameters (identify all correct choices) originally demonstrated in the X-ray diffraction studies by Franklin and model building based on chemistry? A. Uniform distance between the 2 DNA strands. B. Double helix structure formed by hydrogen bonded base pairing between pyrimidines and purines. C. Two strands contain identical sequence of bases. D. The two DNA strands display opposite polarity. Multiple answers: Multiple answers are accepted for this question Select one or more answers and submit. For keyboard navigation... SHOW MORE V a Uniform distance between the 2 DNA strands. b Double helix structure formed by hydrogen bonded base pairing between pyrimidines and purines. Two strands contain identical sequence of bases. d The two DNA strands display opposite polarity.

. The Watson-Crick model contained which of the following parameters (identify all correct choices) originally demonstrated in the X-ray diffraction studies by Franklin and model building based on chemistry? A. Uniform distance between the 2 DNA strands. B. Double helix structure formed by hydrogen bonded base pairing between pyrimidines and purines. C. Two strands contain identical sequence of bases. D. The two DNA strands display opposite polarity. Multiple answers: Multiple answers are accepted for this question Select one or more answers and submit. For keyboard navigation... SHOW MORE V a Uniform distance between the 2 DNA strands. b Double helix structure formed by hydrogen bonded base pairing between pyrimidines and purines. Two strands contain identical sequence of bases. d The two DNA strands display opposite polarity.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter8: The Structure, Replication, And Chromosomal Organization Of Dna

Section: Chapter Questions

Problem 14QP: State the properties of the WatsonCrick model of DNA in the following categories: a. number of...

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Which of the following statements DOES NOT apply to the Watson and Crick model of DNA? a. The two strands of the DNA helix are anti-parallel. b. The distance between the strands of the helix is 20 angstroms (A). c. The framework of the helix consists of sugar-phosphate units of the nucleotides. d. The two strands of the helix are held together by covalent bonds. e. The purines are attracted to the pyrimidines. ...Explain your answer.
Propose an experiment that would test the importance of ionic strength in the determination of DNA melting temperatures. Be specific.
With regard to Chargaff’s experiment described in Figure shown,answer the following:A. What is the purpose of paper chromatography?B. Explain why it is necessary to remove the bases in order todetermine the base composition of DNA.C. Would Chargaff’s experiments have been convincing if theyhad been done on DNA from only one species? Discuss.
According to the Watson- Crick model how many polynucleotide chains does a DNA molecule have?
Please answer You have received a dehydrated sample of DNA primer at a concentration of 19.9 microM. what volume (in microlitres) of buffer would you add to achieve a solution of 100nM of this primer? Show workings.
State the properties of the WatsonCrick model of DNA in the following categories: a. number of polynucleotide chains b. polarity (running in same direction or opposite directions) c. bases on interior or exterior of molecule d. sugar/phosphate on interior or exterior of molecule e. which bases pair with which f. right- or left-handed helix
Given the following DNA strand: TACAGAGATAACCGAATT A. Write the corresponding strand that would form the other half of the DNA molecule. B. Transcribe the original DNA strand (TACAGAGATAACCGAATT) and write the sequence of bases found in the resulting messenger RNA molecule. C. Translate your messenger RNA molecule and write the sequence of amino acids in the resulting protein (the genetic code is provided below).
Indicate whether each of the following base-pairing situations (1) involves two DNA strands, (2) involves a DNA strand and an RNA strand, or (3) could involve either two DNA strands or a DNA strand and an RNA strand? a. A G T U C A b. A C T T G A c. A G U T C A d. C G C G C G a. A G T U C A b. A C T T G A c. A G U T C A d. C G C G C G
In Watson and Crick's model of DNA structure, the two strands of the DNA double helix are joined through a. Ionic bonds b. Hydrophobic interactions c. Covalent bonds d. Disulfide bonds e. Hydrogen bonds
In a melting profile for DNA, the absorbance at 260 nm increases as result of the disruption of the DNA structure. What is the fundamental physical basis for the absorbance increase? a. the effective concentration of DNA changes b. the absorbance of DNA is highly sensitive to temperature c. native DNA absorbs light more strongly than denatured DNA because the bases are stacked d. denatured DNA absorbs light more strongly than native DNA because the bases have become unstacked
What background information did Watson and Crick had available with them for developing a model of DNA? What was their own contribution?
All of the following statements are correct EXCEPT a. DNA forms described by Watson and Crick have right handed helix except of Z-DNA form b. In case of Z-DNA form, the deoxyribose phosphate backbone forms a "Zigzag structure" c. Inverted DNA sequence repeat that happens within each individual strand of the DNA, called cruciform d. Plasmid carries genes that convey antibiotic resistance to the host bacterium